A nucleus containsZprotons which on average are uniformly distributed throughout a tiny sphere of radius R.

(a)Calculate the potential at the center of the nucleus. Assume that there are no electrons or other charged particles in the vicinity of this bare nucleus. (Use any variable or symbol stated above along with the following as necessary:0,, ande.)

V=

(b)Suppose that in an accelerator experiment a positive pion is produced at rest at the center of a nucleus containingZprotons. The pion decays into a positive muon (essentially a heavy positron) and a neutrino. The muon has initial kinetic energyKi. How much kinetic energy does the muon gain by the time it has been repelled very far away from the nucleus? (The muon interacts with the nucleus only through Coulomb's law and is unaffected by nuclear forces. The massive nucleus hardly moves and gets negligible kinetic energy. Consider a platinum nucleus as the system, and take R=61015m.)Enter your answer with 3 significant digits.

K= J

(c)If the nucleus is gold, with 79 protons, what is the numerical value ofKfKiin electron volts?Enter your answer with 3 significant digits.

KfKi= eV

I got part B correct but part A and C cant get correct